Tentering clip



L. SLAGBOOM TENTERING CLIP May 14, 1940.

Filed Aug. 8, 1939 2 Sheets-Sheet 1 INVENTOR, low/r 170 2500 m;

ATTORNEY.

y 14, 1940- SLAGBOOM 2,201,000

TENTERING' CLIP Filed Aug. 8. 1939 2 Sheets-Sheet 2 INVEMOR. L Lou/'3' J layboow ATTORNEY.

Patented May 14, 1940 UNITED STATES PATENT OFFICE I TENTERING CLIP Louis Slagboom, Fair Lawn, N. J.

Application August 8, 1939, Serial No. 288,925

1 Claim. (Cl. 2662) This invention relates to tentering clips. Such t receiv r free th l th, d an a 41; proa device is frequently equipped with a feeler, t jectlng inwardly; and the extensions 1 of the wit, a member, usually pivoted, which controls fixed structure by which the clip is pivotally conthe movable jaw of the clip in its downward or nected with adjoining clips to form an endless 5 closing movement if cloth overlies a slot or aperchain. The movable jaw may be caused to close 5 ture under the feeler and thus serves to cause the in any way, as by gravity. gripping of the cloth by the clip to be effected According to my invention, as shown by Figs. 1 substantially at its very edge. It is known that to 5, the free end of arm 4b is forked, such fork when the movable jaw is allowed to close without being traversed by a pin 8 parallel with the axis cloth being present, to wit, during travel of the of the movable jaw. At 9 is a pivot pin also 10 clip in the outer stretch of the chain of which parallel with said axis and mounted in a proit forms a part or link, or it may be during its jection 3a of the fork 3. On this pin 9 is pivoted travel in the inner stretch if the tentering maa feeler Ill which is here a metal plate of oval chine is being operated without introduction of contour, its bearing hole being near one end and l5 cloth, the gripping edge of such jaw and the porat one side of the longitudinal axis of the feeler. tion of the surface of the fixed jaw of the clip This feeler is confined by the pivot at 9 to arcuate which coacts therewith become worn and require movement, by which I mean substantially only frequent attention to keep them in proper workarcuate movement. It is received by the fork of ing order. According to this invention the clip arm 41) and is in the same plane as the slot 241, itself embodies means which prevents closing of wherefore it may enter the slot when it turns the movable jaw against the fixed jaw in the anti-clockwise. -Its relatively free end is rounded, absence of cloth between them. Further, the as s a wherefore, as usual, to aid in opposing clip is so constructed to this end that practice closing of the movable jaw on the cloth except has shown that it is substantially infallible. substantially at the very edge of the latter. I th drawings: This feeler has a slot II which extends gen- 1 i plan of t improved clip; erally away from the pivot 9 and which receives Fig. 2 is a side elevation, showing cloth absent the P What pp as the relatively we and the movable jaw held against, ontact with side Ha 0f the slot is plain 01 without diversion. the fixed jaw, plate 2 of the latter appearing in The pp side e s t is u s a y Plain 3 ti and parallel to the side Ila, as at Ilb, from the Fig. 3 is a similar but fragmentary view, showend thereof adjoining the free end of the feeler ing the movable jaw held fully open; to a point more or less near its other end where 4 is also a similar View, howing cloth it is diverted in a direction away from the side under and supporting the feeler and the latter to form a recess, as at This recess is so supporting the movable j'aw against contact with disposed that when t e feeler has fallen to PY the cloth until the clip retracts and thereupon e t 211 (Fig- 2) ch recess sts p vid a th cloth frees th feeler; detent shoulder in the path of movement a, Fig.

Fig. 5 is a side elevation of the feeler shown 3, 0f t P in Figs. 1 to 4; and The operation of the clip thus described is as a) Fig. 6 is a view, similar to Fig. 2, of a modified follows:

form of th 1 I Assume that the movable jaw and feeler mem- Except as will be noted, the following parts are hers are in the P t ons of Fig. 3, they being so or may be all the same as in a standard type held y the Opener d thatwheh the p of clip: The fixed structure comprising, with a moves y from the Opener cloth is ot entered 5 base i and plate 2 thereon on which t th between the feeler and plate 2. When said mem- 5 t t fork 3 overhanging the t which bers thus fall without the feeler member being latter is apertured, as slotted, at 2a, in a direcchecked y the 0 0 h he mentioned shoulder oi. tion crossing its outer or left-hand edge; the recess st ds in the p t a 0 pin hus movable jaw 4 pivoted on the horizontal pin 5 checking the jaw member before it contacts with .50 above the plate and in crossing relation to the the plate 2. But if cloth is present under the 5 slot, it having its lower end portion a more or feeler, as in Fig. 4, such feeler is checked before less sharpened blade to coact with the plate to said detent shoulder of its recess llc attains grip the cloth and also having an upstanding arm crossing relation to said path, wherefore the pin 40. to be engaged by a suitable opener, as 6, Fig. 3, 8 can enter the left-hand end of the slot and so of the machine to open the clip, as when it is the jaw member can ultimately assume fully ll closed position. On entering such portion of the slot pin U bears on the surface I la and as the clip now is caused to move away from the opposite cllp (with consequent retraction of the cloth from between the feeler and plate) and the feeler gradually descends the jaw member is prevented from falling on the cloth until it can do so only substantially at its very edge.

In Fig. 6 a modification is shown in which the relative positions of the pin and slot are reversed. That is to say, here the slot I3 is in the arm 6b of the movable jaw member 4 and the pin 12a is a part of the feeler, here designated l2. The surfaces I301, I317 and I30 of the slot respectively correspond to the surfaces Ila, Nb and He of the slot of the feeler first described. The operation, it will be obvious, is here essentially the same as that already described.

It has been proposed (Peterson Patent No. 1,907,090) to accomplish the purposes aimed at by the present invention by providing a feeler which is shiftable transversely of its pivoting axis and forming in the feeler a slot which is generally of re-bent form. Such a construction contemplates preventing the movable jaw from closing on the plate in absence of cloth and it is of course effective to that end. But clue to the ability of the feeler to shift crosswise of its pivot and to the rebent form of the slot, practice has shown that a clip so devised is not by any means as infallibly proof against closing when cloth is absent as is that of my invention, where the feeler is confined to arcuate movement and the slot is coincident with a substantially straight line extending away from the pivot of the feeler.

In the appended claim I use the term bearing" in reference to what is here merely a pin 8.

Having thus fully described my invention, what I claim is:

A tenter clip including fixed structure providing a space open laterally to receive the cloth and a horizontal cloth-supporting surface at the lower side of said space provided with an aperture, a depending jaw member pivoted in said structure above said surface on a horizontal axis and movable outwardly against cloth positioned on said surface and reversely, said structure having a fixed pivot parallel with said axis and above said surface and arranged inward of said member, and an up-and-down-movable feeler member confined by the pivot to a single arcuate path concentric with said pivot and arranged to enter and recede from said aperture, one member having a bearing whose axis is parallel with the first axis and arranged to stand in substantially the same horizontal plane as the pivot when the feeler member, supporting the jaw member, rests on the cloth overlying said aperture and the other member having a slot receiving the bearing and formed to extend approximately horizontally when the feeler member so rests on the cloth and one side of which for substantially the full extent of the slot is straight and the other side of which is the side against which the bearing bears when said members descend without cloth present under the feeler member and has a portion thereof which is displaced from each end of the slot diverted and forming a recess providing a detent shoulder for the bearing and the portion thereof which is relatively between the recess and the jaw member substantialy parallel for its full extent with the first-named slide.

LOUIS SLAGBOOM. 

